Canon R6markII & RT5.9 is inconsistent

Software RawTherapee
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The problem with these images is that they are not mine, so I can’t license them under anything. Reviewers have made some images available on the internet but have not changed their licenses.

BTW, I have also tried these files with ART and ART can process them “properly”. I thought that both RT & ART were closely related with most changes in the UI and organization.

Thanks

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ART has moved to libraw (ditching RT’s increasingly mangled engine derived from significantly hacked-up dcraw). Plans are to move RT that way eventually, but not yet.

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… and LibRaw doesn’t support the R6m2 yet either - it does a closest match to R6 so one ends up w/ the wrong color matrix ATM.

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In that case what about converting to DNG?

  1. Do you know about other software than adobe dng converter? I’m opensuse leap 15.4 but I think that I could make adobe dng converter work under wine.
  2. Would RT be able to process (properly) the dng images converted until eventually RT will be able to process the originals CR3s?

Thanks

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You can check out DNG Lab by our own @cytrinox

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It doesn’t work with canon r6 mkii images, I get:

Unknown camera: make: "Canon", model: "Canon EOS R6m2", mode: "raw"
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digikam’s dng converter seems to work for me.

CR3

grafik
grafik2090×1084 467 KB

DNG

grafik
grafik2090×1084 570 KB

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Digikam is also based on LibRaw and thus ends up w/ the incorrect R6 color matrix. Don’t know about their DNG conversion process.

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I can add R6II support to dnglab as soon as I get CC0 licensed samples: Canon R6 Mark II support · Issue #243 · dnglab/dnglab · GitHub

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I’d love to, but these images are not mine. I do not have the camera yet.

These images are raw posted by reviewers but none of them as licensed CC0 as far as I know.

Thanks

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Samples have been submitted to RPU, but not approved/published yet? @LebedevRI

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Verified, thanks!

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The raw crop (and color matrix) is now live in the development version.

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Cool! Big thx Lawrence37!!!
Would it be possible to use the same settings for the Canon R8 too? It’s technically the same camera as the R6 Mark II (same sensor, same board). The files are interchangeable if you tweak the exit data.
Would be very nice and much appreciated here.

Thx
Bernard

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Thanks for the hint @Bernhard. I submitted a request to add the R8 (Camconst entry for Canon EOS R8 by Lawrence37 · Pull Request #6768 · Beep6581/RawTherapee · GitHub).

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R8 user here, I tried to copy the merge requested camconst.json code to my system copy to make the R8 work, but on running RT I got this in the terminal:

“raw_crop” array must contain numbers
failed to parse camera constants file “C:\Program Files\RawTherapee\5.9.\camconst.json”

(rawtherapee.exe:21700): Gtk-WARNING **: 01:40:50.237: Failed to parse C:\Program Files\RawTherapee\5.9\share\gtk-3.0\settings.ini: Key file does not start with a group

So I think I did added it wrong… Is there a way I can add the code myself, or do I Just need to wait for the next RT release?

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You can download the whole file here:

https://raw.githubusercontent.com/Beep6581/RawTherapee/376d680b16da38436d70e206d19593446f43a111/rtengine/camconst.json

HTH,
Flössie

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Hi @JustFlxn, and welcome!

It’s a l-o-n-g time since I used Windows,
but from where did you get the data to
merge into camconst.json?

Perhaps, just perhaps, you fell into the old
trap of using wrong end-of-line markers; they
are normally invisible, thus a trifle difficult
to detect :-)))

More info: newline - Difference between CR LF, LF and CR line break types - Stack Overflow

Have fun!
Claes in Lund, Sweden

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@Claes I appreciate the welcome, and @floessie thanks for the file. I followed the links that Lawrence37 put:

and tried to add the suggested changes into the current code copying and pasting. That didn’t work. Then I simply overwrote my camconst.json with the file that Lawrence37 posted, and that is still giving me this error:

“raw_crop” array must contain numbers
failed to parse camera constants file “C:\Program Files\RawTherapee\5.9.\camconst.json”

(rawtherapee.exe:27144): Gtk-WARNING **: 00:27:22.840: Failed to parse C:\Program Files\RawTherapee\5.9\share\gtk-3.0\settings.ini: Key file does not start with a group

I did note that the path has " 5.9.\camconst.json " in it, which is weird because there’s no ‘.’ folder so I’m not sure what’s going on in the path… RT loads up as it did before adjusting the file at all, which is kinda neat that it doesn’t crash, but the extra black space on the side remains.

-And I didn’t know about the difference in line markers, but I wouldn’t imagine it would matter if I copied and pasted text without adding any characters? I opened the file with Cudatext and this is what it showed:

cudatext_mVvdLWQK6r

I think the arrow is what kind of newline it is, I don’t know what down arrow is but there’s a left facing arrow at the very end of the document, I have a suspicion that’s not the problem…

Thank you for the help by the way.